Kelsea Ballerini has a surprise for her fans; it's just not clear yet exactly what that surprise is. On Monday (May 29), the singer began teasing ... well, something on her social media accounts.

"Surprise coming. TTYL," Ballerini wrote on Instagram on Monday morning, while sharing a photo of herself onstage at a recent concert. She followed that picture up with two caption-less close-up photos of a pale pink chiffon fabric and the above video: a 30-second clip of someone -- presumably Ballerini herself -- wearing a dress made out of that same fabric and standing amid a rocky landscape. The short video's soundtrack is an electronic melody with indiscernible lyrics.

Ballerini is currently preparing to release her sophomore album, which she says will include at least one song about her fiance, Australian country music artist Morgan Evans (who sings background vocals on the song, too).

“I’m so excited about [this album],” Ballerini says. “I thought that I was attached to my first one, and this one is even more so; it’s, like, me in music form. I think it’s going to be a lot more bolder, a lot lighter and a whole lot darker than my first album.”

Ballerini spent the first half of the year serving as an opening act on Thomas Rhett‘s Home Team Tour; she recently began touring with Lady Antebellum, as a special guest on the country trio's You Look Good World Tour.

See Photos From Kelsea Ballerini's 2016 The First Time Tour